I am finding that riding my Dahon D7HG requires significantly higher effort from me than riding my 700c full-size bike.
It isn't the weight, if anything my full sized bike weighs more.
It isn't brake drag, I have checked repeatedly that the v-brakes are centering right and not rubbing at all.
Chain is adjusted so there is just a little (1/2" or so) slack in it at the tightest point.
Tires are aired up to 65PSI.
When I spin the front wheel with the bike up on the service stand it seems to rotate a LONG time. The rear, not so much. Seems like there is a lot of friction in the Nexus hub.
But when I ride the same route on the 700c bike as on the 20" Dahon, I notice I get to coast a lot more. On the Dahon, it seems like I always have to be pedaling. Anyone else notice this when riding a folder vs a full sized bike?